Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Unedited at normal speed. I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!

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Motorboat - Både sælges, Lilybaeum Yacht Levanzo 25, 2023 EUR 110.000 Scanboat https://www.scanboat.com/en/boat-market/boats/motorboat-lilybaeum-yacht-levanzo-25-17515251

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Baby sea turtle eating on the edge of my marina dock. The little turtle literally let me within inches of him to film. So cool!

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Check out the start of the biggest fleet at the Marblehead NOOD.  With one minute to the gun, the first row takes off while the back row is left behind in bad air.

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The Catana Ocean Class. Can you see yourself on this catamaran? . More info at 'kats.co/c50'. . @catanacatamarans #performance #sailing #yachts #catamarans #ocean

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